Signaling mechanism.



H. MABNALD.

SGNA'LNG MEHNISM MPLIUMMN FILED MAR. 24, 1910.

Patented Jan. 31, 1911.

4LEIU'KE-g-ll MAGDUNALD, 0F ANN ARCBGR, MICHIGAN.

sminuire MnCHAmsr/i.

Specification o Letters atent.

Patented Jan. 3l., 191.1

y Application filed Merch 24, 1910. Serial No. 551,290.

To all whom 'it may concern:- i

Be it known that' l, :non Mannesmann, a citizen ol"- t-he United States, residing at Ann Arbor, inthe county lof 'Vashtenaw and Stalzeo't Midligan, have invented cer tain new andnseful Improvements in Signal'- ing` Mechanism; and I do hereby declare the following-,to be a fall, clear, andexact description of the invention, such as will enable others skilled in the art to which it appcrtains to make and use the saine.

My invention relates to new and nsefnl iniroveincnts in signaling devices tor 'clocks and is more particularly an improvement over that forni ot signaling device shown in my application for lfatent #455343, tiled lle]lteniher 22, 1908 and allowed December ll, 100%) and my object is to provide'means for electrically energizing the works of a cloni; and a, metallic disk, whereby when the hands engage parts oit' the disk an alarm will 'be sounded.

A farther object is to provide a swinging arm in connection with the disk, whereby the Contact point for the hands may be adjusted to any suitable position.

il. further object. "s to provide an adjustable Contact point, whereby a Contact may be made between either the hour or minute hand of the clock.

@ther objects and advantages will be hereinafter referred to and more particularly pointed ont in the specification and Claims,

Iii-the accompanying drawings which ai ,a made a pal-'t o-this application, Figure Il is a front elevation ot a. clock sh owing my '1mproved signaling' device applied thq'eto. Fig'. 2 is a vertical central sectional` View through the traine of the Clock and the dial thereof. Fig. 3 is a detail sectional View through the arm and disk on the di'al of 'the uloolr. Fig. l is an elevation of said arm.

Fig'. l '1S a sectional view ol Figi. l on line 5MB.' Figs. (l and 7 are elevations of the hands of the 'clock showin the dilerent orins of contact fingers thereon.

` Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, l

'indicates the `fratrie of the clock ywhich may lthe usual orlany preferred be constructed in manner and 2 indicates 4theyvorlrs olf the clock, which may he likewise constructed in any preferred manner. 4

The usual form of stem 3 is attatied t the Works and on said stem are mounted the bri lmen with lthe longitudinaleenters of l l n clock 1s located an alarm l0, in this instance eompri-sing a. bell, one pole, of the hell being; att-ached to the battery by a Wire l1 and the opposite pole ont the hell to the works through a wire 12, thereby electrically energizing' the alarm through the Works of the clock and the' dislr when' the circuit is closed. Pivotally attached to the dislt7 an arln lll, the pivotal end off which is insulated from the hands l and 5 and the stein upon which they are mounted by the usual or any preferred forty of insulation lll, thereby completely insalati/ing the disk fromthe Works ol' the clock. i l-Slidahly mounted upon the arm 3 3 is a plate l5, the edges of said plate being curve-d downwardly and inwardly to form channels 16, which channels engage the edges of the arm 13 and torni guides for the 'plate 1 5. IThe plate 15 is longitudinally movable of the arm 13 and is limited in its movement by extending a stein l? downwardly from the plate l5 and through an elongated slot 18 in the ann. The ohjootin moving the plate longitudinally of the arl'n is to position the Contact point4 lltcarrie'd by said plate into the path of eitherthe hour or iniziate hand, said contact point being so arranged that the minntehand will. inove freely over the top of the stein without coni ing in Contact therewith. l

The ends of the hands 4.- and 5 arc preferably bent to'vard the directionv o'l travel and lo the ends oit-said hands are secured fingers 2() and 21, respectively, vwhich are adapted'to engage the Contact point. 19 and.

close the circuit between the disk andV Works r of the clock and thereby sounding the alarm. In view of the fact that the points of .the hands 4 and 5 are bent at an angleto the longitudinal plane of the hand portions the eontact fingers are extended laterally to the free ends ofsaid fingers in aline den hands. .Amd as the Contact fingers are prei?, erwblyaglonstrlleted of spring wire the lateram ile section thereof is made spiral, as shown at ably more or less pointed and is adapted to cooperate with graduations or points 25 adit can be moved upwardly a lsufficient distance to free the steml? from the channels ward pressure is' released therefrom.

- a Verycheap and economical form of sigor fraction thereof.

ally .extending portions 22 thereof will add to the tension oi the fingers while, at the same time, said fingers will be very selflsitivc'. In Fig. 0 of the drawing, I have shown a slightly modi-tied form' of Contact finger, in that a portion of the lateral-ly extending 23. And in addition to the spiral portion of the fingers the ends of said fingers may be provided with balls, or knobs, 23a, as shown inFigs. 6 and 7.

Theiree end 24 o f the arm 13 ispreferjacent the edge of the dial of the clock, whereby the-arm may be positioned Without unnecessary trouble at any particularI hour In operation' should it be desired to sound the 'alarm or signal at any particular hour or fraction of an hour, the arm 13 is swung to the proper position, in the present instance 3.80 oclock and the plate moved inwardly until the stem 17 is in registration with a circular. channel 26 on the-dial, thus bringin the'contaet point 19 into the path of the, n

Contact thereon into engagement with the contact point,f-thej alarm will be energized'and the signal made. If on the other many minutes apart Qr every hour, the plate is movedotwardly on the arm until the stem 17 is inongagement with the circular channel, 27, also formed on the dial, thus positioning the lcmtact point thereon in the path of the tin e'r21 and if the signal is to be made every our,'the arm 13 is swung to the numeral 12 and it the alarm is to be, made at any fraction of the hour, the arm 13 is positioned accordingly. The arm 13, is preferably made of spring metal so that 26 mi2?, 'and willfimmediately lower the stem-into either offsaid channels when up- To permit the hand 5 to move freely over the contact point 19, said hand is provided with an upstanding portion 28, as best shown, in Fig. 2-of`the drawing, said upstanding portion being of suflicientheight to permit said hand to freely move over said contact point.

It will thus be seen that I have provided naling mechanism and one that can be readily applied to any clock. It will likewise he seen that the signal can be operated :it any hour 'or every hou-r or any traction of an hour and in View of the simplicity of the device it can -be attached to the clock at p ger 20 and 1t will be readily seen Y that fwhen the 'hour hand vhas moved the a i-'ery nominal expense. It will further be seen that when vthe signaling mechanism 1s not to be used the contact point may he moved entirely beyond the pat-h oi' Ithev hands, thereby permitting the hands to move around the dial without-causing an alarm.

What I claim is:

l. In a, signaling device, the combination with a disk and the'hands of a clock and means to energize said disk and hands, of a movable arrr'i connected to said disk and i11- sulated from said hands, a plate adjustably mounted.. on said arm and a contact point carrled bysaid plate adapted to be brought into engagement with either of said hands, whereby the circuit between the hands and 'disk will be closed and an alarm sounded.

2. In a signaling device, the combination with a disk, a signal', and energizing medium, an hour and minute hand connected to said energizing medium, of an arm pivoted to said disk and insulated from said hands, contact fingers carried by said hands,

. a plate adjustably mounted on said arm and a contact point carried by said plate adapted to be moved into the path of the finger of either the hour or minute hand, whereby when either of the fingers engage said contact Ipoint the circuit will be closed and the alarm operated to give a signal.

3. In a signaling device, the combination with a metallic d1sk, an hour and minute hand, an alarm and means to electrically energize the disk, alarm and hands, of an arm pivotally attached to said disk andv insulated from said hands, a plate'slidably mounted on said arm, means to limit the movement of said plate, a contact pointon said plate and contact fingers atthe ends of said hands adapted to engage said contact point and close 'the circuit when said contact point is moved into the path of the fingers on either of said hands. ,l l l .4.' Inv a signaling device, the combination with an energizing mediu'n of an arm hav ing a contact point thereon, means to adjust said contact point and to retain the same in .its adjusted position, a air of hands having their free ends extends at an angle to the trend of said hands and contact tin ers hav,- ing laterally extending ortions a apted to bring the contact ends t ereof in alinemcnt with the longitudinal axis of the hands. i

di, In a signaling device, the combination with adial of a clock having circular channels, a pair of hands and Contact fingers at theeuds of said hands, of an arm movable over said dial, a movable contact point-cal.`-

.ried by said arm, a stem extending through said arm and adapted to be entered in said channels to hold the Contact point in proper alincnient, and means to energize said hands and arms, whereby a circuit will be formed when the Contact fingprs of either hand en rages the contact point.

6. In a signaling device, the combination' 'with adiul of a, cloek,.hands therefor arid Contact fingers carried by the free ends of sind hands; 'of :1 movableurm,-menns to energize said hundeand arm, a movable e011- taet point on sind arm, andmeans coperating with saidda! to retain said Contact point in 'proper al'inement, for the puipose described.

VIn testimony wllel'eofl have signed my name to this specification lin the prox-ence of 10 t two subscribing Witnesses.

Witnesses C. E. BAH'IHELL, THOMAS Bumm. 

